A student measured four seedlings at the start of an investigation and again after 5 days.
Table shows the results.
Table
| Seedling | Length at start in mm | Length after 5 days in mm |
|---|---|---|
| 1 | 12 | 30 |
| 2 | 10 | 29 |
| 3 | 11 | 12 |
| 4 | 13 | 32 |
One result is anomalous.
What is the mean increase in length of the seedlings, not including the anomalous result?
14.3 mm
18.7 mm
25.8 mm
30.3 mm
1
59 exam-style questions on AQA GCSE Biology 5.4 Plant hormones, covering 5.4.1 Control and coordination and 5.4.2 Use of plant hormones (HT only). Each one has a worked solution and a mark scheme showing where the marks go.